Waves and optics practice.
Oscillations, wave motion, sound, and how light travels through lenses and mirrors. Every question has an explanation.
- 26questions
- 2topics
- 2exams
Waves and optics in Sri Lanka
Practise waves and optics with the exams you can take in Sri Lanka.
All waves and optics topics.
Each topic opens a list of questions with explanations. Choose the exam you are preparing for.
Ray optics
14 questions across 2 exams
Oscillations
12 questions across 2 exams
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Real questions, worked answers.
- Ray optics · Cambridge IGCSEAn object is placed 60 cm in front of a convex lens of focal length 20 cm. At what distance from the lens (in cm) is the image formed?See the answer and explanation →
- Oscillations · Cambridge IGCSEA mass of 1 kg is attached to a spring of constant 225 N/m. What is the angular frequency of oscillation (in rad/s)?See the answer and explanation →
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- Are the waves and optics questions free?
- Yes. Every question, explanation, mock test and flashcard deck is free, with no plans or paywalls.
- Which exams include waves and optics?
- Cambridge IGCSE, Cambridge A-Level. Pick a topic above, then the exam you are preparing for.